@chad kincham
Miracles authenticated the message was from God and they were Gods mouthpiece of His revelation. Moses declared the Law(new revelation), Elijah and Elisha the Prophets(new revelation). Daniel with Shadrach, Meshach and Abednego in the furnace and also Jonah and Joshua in Jericho.
Then we see nothing till Jesus 3year period of ministry with the New Covenant. The purpose of signs, wonder, and miracles was to authenticate the messenger and the message. This was necessary because God's written revelation was yet incomplete. Christ performed many miracles and signs which the Apostle John describes with these words: Jesus did many other miraculous signs in the presence of his disciples, which are not recorded in this book. But these are written that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name (John 20:30-31). Notice, the miracles of Jesus gave authenticated His message and claims to His Deity.
Matthew 11:3-6
and said to Him, "Are You the Expected One, or shall we look for someone else?"
4 And Jesus answered and said to them, "Go and report to John what you hear and see:
5 the blind receive sight and the lame walk, the lepers are cleansed and the deaf hear, and the dead are raised up, and the poor have the gospel preached to them.
6 "And blessed is he who keeps from stumbling over Me."
Romans 15:18-20
18 For I will not presume to speak of anything except what Christ has accomplished through me, resulting in the obedience of the Gentiles by word and deed,
19 in the power of signs and wonders, in the power of the Spirit; so that from Jerusalem and round about as far as Illyricum I have fully preached the gospel of Christ.
2 Corinthians 12:12
12 The signs of a true apostle were performed among you with all perseverance,
by signs and wonders and miracles.
There is no need for them at all in this period of time until God send His 2 messengers in Revelation who perform miracles, signs and wonders once again authenticating their message is from God in warning the world of Gods wrath and to repent.
All miracle workers since the Apostles until the 2 Witnesses in Revelation are false christs as per Jesus and the Apostles teaching below
Matthew 24:23-27
Then if anyone says to you, ‘Look, here is the Christ!’ or ‘There he is!’ do not believe it.24 For
false christs and false prophets will arise
and perform great signs and wonders, so as to lead astray, if possible, even the elect.25 See, I have told you beforehand. 26 So, if they say to you, ‘Look, he is in the wilderness,’ do not go out. If they say, ‘Look, he is in the inner rooms,’ do not believe it. 27 For as the lightning comes from the east and shines as far as the west, so will be the coming of the Son of Man
Mark 13:22
For false Christs and false prophets will appear and perform signs and wonders that would deceive even the elect, if that were possible.
2 Thessalonians 2:1-12
Concerning the coming of our Lord Jesus Christ and our being gathered to him, we ask you, brothers and sisters, 2 not to become easily unsettled or alarmed by the teaching allegedly from us—whether by a prophecy or by word of mouth or by letter—asserting that the day of the Lord has already come. 3 Don’t let anyone deceive you in any way, for that day will not come until the rebellion occurs and the man of lawlessness is revealed, the man doomed to destruction. 4 He will oppose and will exalt himself over everything that is called God or is worshiped, so that he sets himself up in God’s temple, proclaiming himself to be God.
5 Don’t you remember that when I was with you I used to tell you these things? 6 And now you know what is holding him back, so that he may be revealed at the proper time. 7 For the secret power of lawlessness is already at work; but the one who now holds it back will continue to do so till he is taken out of the way. 8 And then the lawless one will be revealed, whom the Lord Jesus will overthrow with the breath of his mouth and destroy by the splendor of his coming. 9 The coming of the lawless one will be
in accordance with how Satan works.
He will use all sorts of displays of power through signs and wonders that serve the lie, 10 and all the ways that wickedness deceives those who are perishing. They perish because they refused to love the truth and so be saved. 11 For this reason God sends them a powerful delusion so that they will believe the lie 12 and so that all will be condemned who have not believed the truth but have delighted in wickedness.
hope this helps !!!